For conveying today’s highly abrasive engineered resins, in particular glass fiber reinforced resins, PriceFitters offers wear resistant elbows. Known in the industry as "porcelain-lined," "ceramic-lined," or "glass-lined" elbows, these components are a proven solution to elbow wear.
Resin pellets generally travel at speeds between 3,500 and 5,500 feet per minute when conveyed pneumatically in dilute phase systems. As they travel, they come in contact with the inner wall of the conveying tube, especially when they reach an elbow. Highly abrasive materials conveyed in this manner can wear standard aluminum and stainless steel elbows prematurely.
For these types of applications, PriceFitters offers wear resistant elbows consisting of a steel elbow with a 0.004-0.007" thick coating of porcelain enamel on the inside surface of the tube. Our single coat, wear resistant elbows deliver approximately 12 times the service life of a standard stainless steel elbow, which can help eliminate downtime and maintenance costs.
Porcelain enamel is a borosilicate glass frit that is applied evenly to the tube wall at temperatures in excess of 900° F. Porcelain enamel provides a high resistance to abrasion due to its high surface hardness (6-7 on the MOHS Hardness Scale), resistance to gouging or crushing of its underlying enamel structure, and excellent lubricity which allows for pellets to slide along the wall with very little friction.
PriceFitters offers in-stock, wear resistant elbows in standard radius sizes from 1.5" OD through 4"OD. In addition, alternate radius bends, as well as fittings and transitions, may be ordered with either single (0.004-0.007") or double (0.008-0.012") enamel lining. Available base materials are limited to carbon or stainless steel due to the high temperature required when affixing the enamel.
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